Home / 30,444.99-42,015.69-18,506.40

Finding the Fourth Proportional to 30,444.99, 42,015.69 and 18,506.40

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Solution

The fourth proportional to 30,444.99, 42,015.69 and 18,506.40 is: 25,539.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,444.99 : 42,015.69 = 18,506.40 : x
  2. Step 2: Convert to fraction form
    30,444.99/42,015.69 = 18,506.40/x
  3. Step 3: Cross multiply
    30,444.99x = 42,015.69 × 18,506.40
  4. Step 4: Simplify right side
    30,444.99x = 777,559,165.42
  5. Step 5: Solve for x
    x = 777,559,165.42/30,444.99
  6. Step 6: Final answer
    x = 25,539.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.